[11] Starting from Sitecore XP 7.5 through 8.2, MongoDB was required for Sitecore xDB. Beginning with Sitecore 9.0, SQL Server support was added, while Mongo DB Support was re-added for Sitecore 9.0.2. For specific details, refer to the Installation Guide for the corresponding XP version or to the MongoDB compatibility table article.

[12] The Oracle database storage setup is only available when Sitecore XP is running in Sitecore Experience Management mode (CMS-only mode), which lets you run Sitecore XP without the Experience Database (xDB) enabled.

[15] Sitecore XP 8.1 or lower supports .NET Framework 4.5 and 4.6 in quirks mode (when httpRuntime targetFramework is not set or is set to 4.0). You can find more information about httpRuntime targetFramework and quirks mode here: All about httpRuntime targetFramework.

[22] The targetFramework attribute of the httpRuntime and compilation sections must be configured according to the .NET Framework compatibility table above. The server where the Sitecore instance is hosted must have a compatible or higher version of the .NET Framework installed. Please pay attention to the fact that note #15 still applies.

[23] Sitecore XP 8.2 Update-5 or later can be incompatible with .NET Framework 4.5.2 due to the security update, which introduces some breaking changes to the System.dll assembly.

[24] Microsoft SQL 2016 support is for Standard, Enterprise, and Express editions.

[25] Horizon does not work with IE11.

[26] Microsoft does not fully support MS ML Server installed on Windows Server 2019. More information can be found in the official MS documentation: